Method for the production of levulinic acid
    3.
    发明授权
    Method for the production of levulinic acid 失效
    乙酰丙酸生产方法

    公开(公告)号:US5892107A

    公开(公告)日:1999-04-06

    申请号:US747441

    申请日:1996-11-08

    摘要: A method of producing dehydration products from one or more 5-carbon or 6-carbon sugars includes reacting said one or more sugars at 40.degree.-240 .degree. C. for 1 to 96 hours in the presence of 10-90% sulfuric acid, separating the reaction products, and recovering levulinic acid. The sugars can be generated from strong acid hydrolysis of biomass, such as rice straw, paper, cotton and other cellulosic materials.

    摘要翻译: 从一种或多种5-碳或6-碳糖生产脱水产物的方法包括在10-90%硫酸存在下,使所述一种或多种在40℃-240℃下的糖反应1至96小时,分离 反应产物,并回收乙酰丙酸。 糖可以通过生物质的强酸水解产生,如稻草,纸,棉等纤维素材料。

    Method of separating acids and sugars resulting from strong acid
hydrolysis
    4.
    发明授权
    Method of separating acids and sugars resulting from strong acid hydrolysis 失效
    分离由强酸水解产生的酸和糖的方法

    公开(公告)号:US5580389A

    公开(公告)日:1996-12-03

    申请号:US465855

    申请日:1995-06-06

    摘要: A economically viable method for producing sugars using concentrated acid hydrolysis of biomass containing cellulose and hemicellulose is disclosed. The cellulose and hemicellulose in the biomass is first decrystallized and then hydrolyzed to produce a hydrolysate containing both sugars and acid. Silica present in the biomass can then be removed for further processing. The remaining solids are then subjected to a second decrystallization and hydrolyzation to optimize the sugar yields. An improved method for separating the sugars from the acid in the hydrolysate is also disclosed. The resulting sugar stream can then be fermented, using an improved method which allows both hexose and pentose sugars to be fermented simultaneously.

    摘要翻译: 公开了使用含有纤维素和半纤维素的生物质的浓缩酸水解生产糖的经济可行的方法。 首先将生物质中的纤维素和半纤维素脱结晶,然后水解,生成含有糖和酸的水解产物。 然后可以除去存在于生物质中的二氧化硅用于进一步处理。 然后将剩余的固体进行第二次去结晶和水解以优化糖产率。 还公开了一种用于在水解产物中从酸分离糖的改进方法。 然后可以使用允许己糖和戊糖同时发酵的改进方法将所得糖流发酵。

    Method of separating acids and sugars using ion resin separation
    5.
    发明授权
    Method of separating acids and sugars using ion resin separation 失效
    使用离子树脂分离分离酸和糖的方法

    公开(公告)号:US5820687A

    公开(公告)日:1998-10-13

    申请号:US664184

    申请日:1996-06-13

    摘要: A economically viable method for producing sugars using concentrated acid hydrolysis of biomass containing cellulose and hemicellulose is disclosed. The cellulose and hemicellulose in the biomass is first decrystallized and then hydrolyzed to produce a hydrolysate containing both sugars and acid. Silica present in the biomass can then be removed for further processing. The remaining solids are then subjected to a second decrystallization and hydrolyzation to optimize the sugar yields. An improved method for separating the sugars from the acid in the hydrolysate is also disclosed. The resulting sugar stream can then be fermented, using an improved method which allows both hexose and pentose sugars to be fermented simultaneously.

    摘要翻译: 公开了使用含有纤维素和半纤维素的生物质的浓缩酸水解生产糖的经济可行的方法。 首先将生物质中的纤维素和半纤维素脱结晶,然后水解,生成含有糖和酸的水解产物。 然后可以除去存在于生物质中的二氧化硅用于进一步处理。 然后将剩余的固体进行第二次去结晶和水解以优化糖产率。 还公开了一种用于在水解产物中从酸分离糖的改进方法。 然后可以使用允许己糖和戊糖同时发酵的改进方法将所得糖流发酵。

    Method of producing sugars using strong acid hydrolysis of cellulosic
and hemicellulosic materials
    7.
    发明授权
    Method of producing sugars using strong acid hydrolysis of cellulosic and hemicellulosic materials 失效
    使用纤维素和半纤维素材料的强酸水解生产糖的方法

    公开(公告)号:US5562777A

    公开(公告)日:1996-10-08

    申请号:US38628

    申请日:1993-03-26

    摘要: A economically viable method for producing sugars using concentrated acid hydrolysis of biomass containing cellulose and hemicellulose is disclosed. The cellulose and hemicellulose in the biomass is first decrystallized and then hydrolyzed to produce a hydrolysate containing both sugars and acid. Silica present in the biomass can then be removed for further processing. The remaining solids are then subjected to a second decrystallization and hydrolyzation to optimize the sugar yields. An improved method for separating the sugars from the acid in the hydrolysate is also disclosed. The resulting sugar stream can then be fermented, using an improved method which allows both hexose and pentose sugars to be fermented simultaneously.

    摘要翻译: 公开了使用含有纤维素和半纤维素的生物质的浓缩酸水解生产糖的经济可行的方法。 首先将生物质中的纤维素和半纤维素脱结晶,然后水解,生成含有糖和酸的水解产物。 然后可以除去存在于生物质中的二氧化硅用于进一步处理。 然后将剩余的固体进行第二次去结晶和水解以优化糖产率。 还公开了一种用于在水解产物中从酸分离糖的改进方法。 然后可以使用允许己糖和戊糖同时发酵的改进方法将所得糖流发酵。

    Method for the production of levulinic acid and its derivatives
    8.
    发明授权
    Method for the production of levulinic acid and its derivatives 失效
    乙酰丙酸及其衍生物的生产方法

    公开(公告)号:US6054611A

    公开(公告)日:2000-04-25

    申请号:US076941

    申请日:1998-05-13

    摘要: A method of producing dehydration products from one more 5-carbon or 6-carbon sugars includes reacting said one or more sugars at 40-240.degree. C. for 1 to 96 hours in the presence of 5-90% sulfuric acid, separating the reaction products, and recovering levulinic acid. The sugars are can be generated from strong acid hydrolysis of biomass, such as rice straw, paper, cotton and other cellulosic materials.

    摘要翻译: 从多一个5-碳或6-碳糖生产脱水产物的方法包括在5-90%硫酸存在下,使所述一种或多种糖在40-240℃下反应1至96小时,分离反应 产品和回收乙酰丙酸。 糖可以由生物质的强酸水解产生,例如稻草,纸,棉等纤维素材料。